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powerpc/pseries: Move property cloning into its own routine

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Move property cloning code into its own routine

Split the pieces of dlpar_clone_drconf_property() that create a copy of
the property struct into its own routine. This allows for creating
clones of more than just the ibm,dynamic-memory property used in memory
hotplug.

Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Nathan Fontenot 2016-06-20 09:00:39 -05:00 committed by Michael Ellerman
parent 236977609a
commit c2101c9039
1 changed files with 26 additions and 12 deletions
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38
arch/powerpc/platforms/pseries/hotplug-memory.c
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@ -69,13 +69,36 @@ unsigned long pseries_memory_block_size(void)
return memblock_size;
}
static void dlpar_free_drconf_property(struct property *prop)
static void dlpar_free_property(struct property *prop)
{
kfree(prop->name);
kfree(prop->value);
kfree(prop);
}
static struct property *dlpar_clone_property(struct property *prop,
u32 prop_size)
{
struct property *new_prop;
new_prop = kzalloc(sizeof(*new_prop), GFP_KERNEL);
if (!new_prop)
return NULL;
new_prop->name = kstrdup(prop->name, GFP_KERNEL);
new_prop->value = kzalloc(prop_size, GFP_KERNEL);
if (!new_prop->name || !new_prop->value) {
dlpar_free_property(new_prop);
return NULL;
}
memcpy(new_prop->value, prop->value, prop->length);
new_prop->length = prop_size;
of_property_set_flag(new_prop, OF_DYNAMIC);
return new_prop;
}
static struct property *dlpar_clone_drconf_property(struct device_node *dn)
{
struct property *prop, *new_prop;
@ -87,19 +110,10 @@ static struct property *dlpar_clone_drconf_property(struct device_node *dn)
if (!prop)
return NULL;
new_prop = kzalloc(sizeof(*new_prop), GFP_KERNEL);
new_prop = dlpar_clone_property(prop, prop->length);
if (!new_prop)
return NULL;
new_prop->name = kstrdup(prop->name, GFP_KERNEL);
new_prop->value = kmemdup(prop->value, prop->length, GFP_KERNEL);
if (!new_prop->name || !new_prop->value) {
dlpar_free_drconf_property(new_prop);
return NULL;
}
new_prop->length = prop->length;
/* Convert the property to cpu endian-ness */
p = new_prop->value;
*p = be32_to_cpu(*p);
@ -748,7 +762,7 @@ int dlpar_memory(struct pseries_hp_errorlog *hp_elog)
break;
}
dlpar_free_drconf_property(prop);
dlpar_free_property(prop);
dlpar_memory_out:
of_node_put(dn);